baber/WOPTO huggingface dataset:
Patent GB-677138-A (GB)
Title: Liquid fuel regulating means for use with prime movers
Inventor: IFIELD RICHARD JOSEPH
IPC: F02D1/12
Filed: 1949-08-22
Abstract: 677,138. Gas turbine plant. LUCAS, Ltd., J. Aug. 16, 1950 [Aug. 22, 1949], No. 21714/49. Class 110(iii) [Also in Group XXIX] A liquid fuel supply system for jet-propulsion engines, gas turbines and like prime movers comprises a restricted orifice g (or a venturi) in the fuel supply line from the pump f to the burners, a chamber divided into two compartments c, d by a diaphragm b (or a piston), a passage h between the upstream side of the orifice g and the compartment c having a restricted orifice i, an unrestricted passage k between a point in the line j at lower pressure and the compartment d, a valve n carried by the diaphragm b and cooperating with a seating m, a passage o leading from the seating through a further restricted orifice p to a discharge outlet, and fuel regulating means responsive to the pressure between the seating m and the orifice p. As shown the fuel supply is regulated by a variable delivery swash-plate pump f as described in Specification 577,016, (Group XXIX), the servomotor piston 5 being controlled by a leak-off valve 14 connected to a diaphragm 16 by a stirrup 15. The diaphragm 16 is loaded by a tension spring 18 adjusted by a lever 21 through rack and pinion mechanism 20 and is subject to the pressure difference on opposite sides of the orifice p. The passage k opens on the downstream side of the orifice g. In Fig. 2, the orifice g is replaced by a venturi g<SP>1</SP> and the passage k opens at the throat of the venturi. In addition the orifice p is variable by a throttle member 23 carried by a diaphragm 24 (or piston) subject to the pressures on opposite sides of the throttle member. The valve 14 controlling the pump servomotor 5 is actuated by two diaphragms 28, 29 connected by a stirrup 15. The upper diaphragm 28 is acted on by an evacuated elastic capsule 30 and also by the pressure difference on opposite sides of the throttle 23 whilst the lower diaphragm 29 is subject to the pressure downstream of the throttle and also to a further variable pressure depending upon a variable condition of the prime mover such as the pressure at a point in the fuel system or the blower air pressure. According to the Provisional Specification this variable pressure may be the atmospheric pressure.
Patent GB-601534-A (GB)
Title: Improvement in work supporting and moving mechanism
IPC: B23Q1/48
Filed: 1945-08-24
Abstract: 601,534. Milling-machines. JONES & LAMSON MACHINE CO. Aug. 24, 1945, No. 21788. Convention date, Aug. 4, 1944. [Class 83 (iii)] [Also in Group XXIII]  In a machine for gyrating a work-piece about a desired axis without rotation, for cutting or grinding either externally or internally, the work-supporting and moving mechanism comprises a rotary spindle having a face member, adjustable laterally, which carries a journal on which is mounted the work support prevented from rotating by means of pivoted arms connected to the work holder by means allowing sliding movement in the pivotal direction ; the adjustment of the face member may be effected during the operation of the machine. As shown, the work holder 21 is journalled on a cam-shaft 40 having a flanged portion 17 which forms the face plate and is supported by a hollow-spindle 3 for motion transverse to the spindle with which it is rotated. The cam portions 42 of the shaft 40 engage coacting parts of an external sleeve 46 slidably mounted within the spindle 3. A threaded crankmember 64, secured to a rotatable housing 55, in which is journalled one end of the sleeve 46, moves the sleeve axially and displaces the shaft 40 and work holder 21 transversely to the spindle 3 causing the work holder to gyrate around the spindle axis, the spindle being driven by gearing 4, 5. The work' holder is restrained from rotation about its own axis by two pivoted arms 22 slidably engaging a spindle 260 secured in lugs 27 depending from the work holder. The disc 63 may be calibrated to indicate the adjustment made to the work holder. In a modification, the displacement of the work holder is effected by a skew-gear rack on the flanged portion 17 engaging a similar gear on the shaft 40 which is made separate from the flanged portion and is axially movable by a crank 64.
Patent GB-1506755-A (GB)
Title: Pharmaceutically useful prostenoic acid derivatives
IPC: C07D307/93
Filed: 1975-05-21
Abstract: 1506755 Prostaglandins SANKYO CO Ltd 21 May 1975 21845/75 Heading C2C The invention comprises prostaglandins of the Formula I wherein R<SP>2</SP> and R<SP>3</SP> each are C 1-4  alkyl and R<SP>4</SP> is H or C 1-4  alkyl and pharmaceutically acceptable salts thereof where R<SP>4</SP> is H, and their preparation. The prostaglandins are obtained by removing the carbonyl protecting groups from compounds of the Formula II which are made by reducing the corresponding 15-oxo compounds, resulting from the reaction between compounds of the formula with the appropriate cyclopentanecarboxaldehydes. Methyl 7-(5,5 - ethylenedioxy - 2# - formyl - 3α- methyl - 1α - cyclopentyl)heptanoate is prepared by oxidizing methyl 7 - (5,5 - ethylenedioxy - 2#- hydroxymethyl - 3α - methyl - 1α - cyclopentyl) heptanoate, resulting from the reaction between ethylene glycol and methyl 7 - (2# - hydroxymethyl - 3α - methyl - 5 - oxo - 1α - cyclopentyl) heptanoate, which is obtained by treating 2# - hydroxymethyl - 1α - (6 - methoxycarbonylhexyl) - 3α - methyl - 5 - oxo - 1# - cyclopentanecarboxylic acid γ-lactone with bases, the lactone being obtained by reacting ethyl 7-iodoheptanoate with 2# - hydroxymethyl - 3α - methyl - 5- oxo - 1# - cyclopentanecarboxylic acid γ-lactone, resulting from reacting potassium t-butoxide with 3# - ethoxycarbonyloxymethyl - 4α - methylcyclopentan - 1 - one, which is prepared by hydrolysing 3# - ethoxycarbonyloxymethyl - 4α- methylcyclopentan - 1 - one ethylene acetal, obtained by reacting ethyl chloroformate with 3# - hydroxymethyl - 4α - methylcyclopentan- 1 - one ethylene acetal, the latter being obtained by reducing ethyl 8α-methyl-1,4-dioxaspiro[4,4]nonane - 7# - carboxylate, which is prepared by reacting sodium ethoxide with ethyl 8α - methyl - 1,4 - dioxospiro[4,4]nonone - 7α- carboxylate, obtained by reacting ethylene glycol with ethyl 2α - methyl - 4 - oxo - 1α - cyolopentanecarboxylate, which is prepared by treating 2#- methoxycarbonyl - 3α - methyl - 4α - ethoxycarbonylcyclopentanone with sodium iodide and glacial acetic acid. Pharmaceutical compositions, suitable for oral and parenteral administration, contain the above prostaglandins or salts thereof together with pharmaceutical carriers or diluents. The compounds possess anti-ulcerogenic activity.
Patent GB-603792-A (GB)
Title: Improvements relating to the landing wheels of aircraft
IPC: B64C25/40
Filed: 1945-08-25
Abstract: 603,792. Aircraft landing wheels. DAVIS, W. A. (St. John's Industries Co., Ltd.). Aug. 25, 1945, No. 21876. [A Specification was laid open to inspection under Sect. 91 of the Acts, Aug. 10, 1946.] [Class 4] A positively driven aircraft landing wheel is provided with a one-way clutch between the wheel and a central axle driven by an hydraulic motor. The hub 2 carries a loosely-fitting axle housing 5 secured to the wheel support 6 which also carries a fluid pressure turbine 7 described in Specification 603,791. A cap 10 attached to a wheel disc 3 carries a cup 11 into which extends a cylindrical block 12 carried by the driving shaft 8. Pawls carried by the cup 11 engage notches in the block 12, whereby the wheel, if rotating faster than the turbine, may overrun it.
Patent GB-1445302-A (GB)
Title: Pedestal construction for a treatment chair
IPC: A61G15/00
Filed: 1974-05-16
Abstract: 1445302 Pedestals PELTON & CRANE CO 16 May 1974 [17 May 1973] 21883/74 Heading A4H [Also in Division B8] A pedestal for a treatment chair, such as a dental chair, having a standard and associated electrically operable components thereon, comprises a base 36 having a recess 36a' receiving a turn-table 35 therein on ball bearings 35e and retained in position by a boss 36f received in axial opening 35f associated with a bearing 35h and cap 35j. A passageway 40 extends through the base 36 and communicates with an aperture 36f' in the boss 36f to allow passage of an electrical conductor from outside the pedestal through the opening 35f and an aperture 35j' in the cap 35j for connection to the chair (11), Fig. 1 (not shown).
Patent GB-1323492-A (GB)
Title: Apparatus for the saturation of liquids with gas particularly for the apparatus for the saturation of liquids wit gas particularly for the production of aerated water
IPC: B01F3/04
Filed: 1971-04-19
Abstract: 1323492 Aerating liquids F TREMOLADA 19 April 1971 [26 Feb 1970] 21915/71 Heading B1C [Also in Divisions Fl F2 and G3] . In apparatus for aerating liquids, the liquid is supplied by a double-acting reciprocating pump 1 actuated by gas which is thereafter vented to atmosphere the gas may be the aerating gas. As shown (see also Figs. 2-6, not shown, and Division Fl) the pump has two pistons providing two operating chambers 13, 16 and two pumping chambers 14, 15 from which the liquid is pumped to a spray aerator 2 supplied with gas (e.g. carbon dioxide) from a cylinder B. The aerated liquid passes to a tank 3 which is under gas pressure and has a float 54 which controls operation of the pump. Fall of level in the tank admits gas to a duct 50 to open valves 51, 52 (see Figs. 7-12, not shown, and Division F2) which respectively allow supply of pressure gas to the pump through ducts 49, 19 and discharge therefrom to atmosphere through ducts 21, 21'.
Patent GB-807627-A (GB)
Title: Improvements in or relating to amplifier structure employing a semiconductor device
IPC: H03K3/26
Filed: 1956-07-16
Abstract: 807,627. Transistor pulse amplifying and shaping circuits. SPERRY RAND CORPORATION. July 16, 1956 [July 28, 1955], No. 21919/56. Class 40 (6). In a circuit in which an input signal causes Current to flow in an output load and in which current continues to flow in the load after cessation of the input signal due to carriers stored in the transistor, a pulse-shaping circuit is provided to control the output waveform. Input pulses A., Fig. 3, are applied at terminals 21 over resistor R1 to the base of the common emitter connected transistor 20 feeding a load RL in the collector circuit. During the period t1-t2 the positive-going shaping pulse B causes the diode D1 to conduct and maintain the base of transistor 20 positive with respect to the emitter so that no collector current flows even when the input commences to go negative. At time t2 both inputs are negative and current flows in the transistor to generate a positive-going output pulse C. When the input pulse ceases at time t4 current continues to flow in the output load RL due to the charge carriers existing in the transistor. This current is interrupted by the next positive-going shaping pulse occurring at time t5 which causes the diode D1 to conduct to drain or drive away the carriers. Since the rise and fall of the output pulse are independent of the input pulse they may be made more rapid. The diode D1 may be replaced by diodes D2 or D3 fed with clock pulses. Alternatively the shaping pulses may be applied at the point X or in the emitter lead. In a modification, Fig. 4 (not shown), a common base circuit is employed with the shaping pulses applied to the base lead. Clamping circuits may be connected to either the emitter or collector lead. The transistor may also be operated in the common collector connection and the shaping circuit connected to any electrode. Multielectrode transistors may be employed.
Patent GB-170129-A (GB)
Title: Improved means for traversing agricultural tractors during ploughing and like operations
IPC: A01B3/66
Filed: 1920-07-23
Abstract: 170,129. Grimston, F. July 23, 1920. Steam and other power cultivation of land; ploughs. -. A ploughing- apparatus, of the type in which the plough is moved by a motor which rotates a driving wheel in a loop of an anchored rope, is designed to utilize the motor haulage with ploughs that are hand guided in the same manner as a horse plough. Two oppositelyacting ploughs, furnished with handles for manipulation by the ploughman, are connected by flexible couplings to a light fourwheeled trolly A carrying the motor and the grooved driving-wheel B. The rope D passes completely round the wheel and is connected at its ends to hoe-shaped anchors of a width equal to one furrow to facilitate re-setting of the rope. One anchor connection may be through an adjustable clamp, which enables the length of rope is used to be varied. On the trolly, a reversible swinging arm G carries a friction wheel E which presses the rope against the wheel near the point when it is led off towards the rear of the apparatus. An adjustable spring F varies the pressure between the wheel E and the-rope.
Patent GB-947760-A (GB)
Title: Photosensitive lithographic plate and method for preparing same
IPC: G03F7/016
Filed: 1962-06-07
Abstract: 947,760. Presensitised planographic plates. POLYCHROME CORPORATION. June 7, 1962 [July 25, 1961], No. 22114/62. Headings G2C and G2M. Positive-acting light-sensitive planographic printing plates comprise a flexible base coated with the reaction product of a light-sensitive diazo resin and a water soluble complex cyanide. They may be obtained by coating a base with the pre-modified resin or by treating negative-acting diazo resin coated plates with a solution of the complex cyanide. An alkali halide, e.g. KBr or KI may be added to the cyanide solution to increase the contrast of the plate. In use the exposed areas are destroyed and can be washed off with water while the non-exposed areas can be rendered inkreceptive by development with a diazo coupler. Complex cyanides specified are the soluble alkali metal, alkaline earth metal and ammonium ferro- and ferri-cyanides and the corresponding nickel and cobalt complexes. The flexible sheet may be any of the usual planographic base sheets e.g. paper or plastics, which may be treated with starch carbamate or polyvinyl alcohol, or thin metal or metal laminate. Specified metals are aluminium, which may be treated with a soluble silicate, zirconium hexahalide or polyacrylic acid, steel magnesium, zinc, chromium and copper. Diazo resins are exemplified by the double salt of diazotised p-aminodiphenylamine condensed and polymerized with formaldehyde. In a specific example an aluminium plate coated with this resin is treated with potassium ferrocyanide, washed, exposed to an ultra-violet light through a positive transparency and developed with an aqueous solution of coupler (beta-naphthol) and mild alkali (tetrasodium pyrophosphate). The developed plate is after-treated by contact for 30 seconds with an aqueous solution of phenylazoaniline, naphthalene trisulphonic acid and phosphoric acid, washing, wiping with a desensitising gum and lacquering. In a modification a further developing step is introduced after the treatment with beta-naphthol solution and comprises application of an o-phenyl phenol solution having the following composition:- 2000 c.c. isopropylalcohol, 120 c.c. glycol, 4 to 20 g., o-phenyl phenol, 2 to 4 c.c. phosphoric or oxalic acid and water to make 4000 c.c.
Patent GB-240149-A (GB)
Title: Improvements in and relating to electric discharge devices and means for operating the same
IPC: H01J17/14
Filed: 1925-09-04
Abstract: 240,149. British Thomson-Houston Co., Ltd., (Assignees of Found, C. G., and Langmuir, I.). Sept. 18, 1924, [Convention date]. Oscillographs.-A glow discharge device for use as an oscillograph comprises a discharge tube 1 containing a gas such as argon and having a highly refractory metal such as tungsten, molybdenum or tantalum vaporized in the gaseous discharge path. The electrodes are of highly refractory metal, the anode 2 being in plate form and the cathole 3 being made as a filament and included in the circuit of a battery 9 by which it is heated. The operating circuit, preferably carrying a direct current, comprises a variable resistance 14, switch 15, and the secondary of a transformer 16. The discharge may be started by impressing a high frequency field on the gaseous discharge path by means of the circuit 30 which includes a conductor 31 surrounding the tube 1. The refractory metal particles are introduced into the gas by momentarily opening the switch 11 of the cathode heating circuit, whereby the increased intensity of bombardment of the cathode by the positive ions causes disintegration thereof. The character of the glow is varied by a series of magnets 18, 19 of variable strengths disposed along the tube, by the provision of projections 32 inside the tube, and bv impressing on the direct current a variable or alternating current by means of the transformer 16. A second cathode 4, which may be a massive piece of tungsten or other metal, may be introduced for the purpose of starting the discharge or of supplying the metal particles.
Patent GB-600333-A (GB)
Title: Improvements in duplicating machines
IPC: B41L11/00
Filed: 1945-08-29
Abstract: 600,333. Rotary duplicators. STEVENS, A. H. (Smith & Corona Typewriters, Inc., L. C.). Aug. 29, 1945, No. 22215. [Classes 100(i) and 100(ii)] Copying documents; printing-surfaces; feeding sheets. -A rotary mirrorscript duplicator comprising a drum 10 carrying a master sheet has means for supporting a web of blocking-out material adjustable circumferentially of the drum to cover a variable amount of the master sheet. The drum 10 has a gap 18, Fig. 2, to receive the leading-ends of the master and mask sheets, the former being gripped by feed rollers 19, 20 and the latter by similar rollers 21, 22, the rollers 19, 21 being rotatable by hand to feed the sheets to the required positions: the trailing edge of the gap 18 forms an obtuse angle with a tangent to the drum and is in a plane tangential to the rollers 19, 20. The mask may have window openings and may consist of one or more webs of various widths for blocking out columns of the master. The rollers 20, 22 are carried by arms 28, 29 connected by springs 7 pressing the rollers towards the rollers 19, 22. Fig. 13 shows a modification in which the leading-edge of the master is clamped against a plate 79 let into the drum, by lips 69 on pins 67 releasable against the action of springs 70 by turning arms 72 carrying a rod 71 engaging the ends of the pins. The leading- edge of the mask is anchored in a slot 65b in a roller 59b rotatable to wind up the mask, which passes over a guide roller 60b. The clamping-pin arrangement may also be associated with feed rollers 21, 22 for the mask, and the re-wind device 59b with rollers 19, 20 for feeding the master. A spring arm bearing against the shaft of the roller 59b acts as a brake to prevent accidental rotation. The drum 10 is mounted on a shaft 11 rotatable in bearing blocks 12 removably held in slots 13, Figs. 1 and 2, in side plates 14a, 14b by channelled members 15 fixed by screws 16 to the plates and seated in grooves 17 in the blocks 12. Sheets to be printed are fed by hand to rollers 32, 33 grooved to accommodate front stops 34. The roller 32 is carried by spring-pressed arms 41 and the stops by spring-pressed arms 47, the roller being lowered and the stops raised for feeding, by a lever 43 rocked about a pivot 44 by a cam 49 adjustably clamped to the drumshaft 11 by a nut 52. Specification 534,845 is referred to.
Patent GB-1270071-A (GB)
Title: Steam reforming of hydrocarbons
Inventor: TALBERT SHELDON
IPC: C10G11/20
Filed: 1970-05-08
Abstract: 1,270,071. Making combustible gas. LUMMUS CO. 8 May, 1970 [8 May, 1969], No. 22287/70. Heading C5E. Hydrocarbons are steam reformed to produce effluents containing CO and H 2  in total concentration of at least 80 mole per cent by feeding the heated hydrocarbon to at least two reformer zones in parallel, wherein also the effluent from one zone is mixed at at least 1200‹ F. with the hydrocarbon feed of the immediately subsequent zone, the final reformed product being removed from the last zone, and where the steam/carbon mole ratio for the first zone is at least 2:1, and where the total steam/carbon mole ratio based on the total hydrocarbon feed is less than 2:1. The hydrocarbon feed enters the convector heating sections 15, 21 of the reformer and thence to the catalyst tubes 17, 25 in the radiant heating section 18, 26. In the preferred embodiment (2 zones) the mixture temperature is between 1300-1500‹ F. and the overall steam/carbon mole ratio is from 1À1:1 to 1.9:1 and for the first zone from 2.0:1 to 4À0:1. The effluent from the first zone is between 1350‹ F. and 1700‹ F., and the hydrocarbon portion of the second zone is preheated to 300‹-800‹ F. Steam may be introduced at several zones or all at the first zone. Suitable feedstocks are methane, propane, naphtha, liquid natural gas.
Patent GB-170137-A (GB)
Title: Improvements in or relating to flying machines
IPC: B64C27/28
Filed: 1920-07-27
Abstract: 170,137. Slinger, T. July 27, 1920. Aeroplanes; helicopters; planes, arrangement of; propelling.-In addition to a pair of screw propellers which rotate substantially at rightangles to a plurality of superposed planes of an aeroplane, a third propeller, also rotating at right-angles to the planes, is provided to turn the machine through a rightangle so that it may be capable of horizontal or vertical flight. In the Figure, which shows the machine on the ground, the three planes A, A, A<1> have less than normal span, and the two propellers C are driven in opposite directions by twin engines D, which are connected together and to a shaft H by gear-wheels F, G. The third propeller M is driven through a friction clutch I. Steering, balancing, and regulating altitude.- Rudders N, at opposite ends of the plane A, have double motion, viz. : firstly, about an axis O by a cable operating a pulley J; secondly, about an axis in the hub Q at right-angles to the axis 0 by a slidable grooved member U through a crank and connecting rod T. Cabins are mounted on pivots perpendicular to the plane of the paper to maintain an upright position. Land wheels Z, Z<1> are mounted on structures Y secured to the planes.